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Finding the Fourth Proportional to 328,634.40, 492,757.20 and 171,170.40

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Solution

The fourth proportional to 328,634.40, 492,757.20 and 171,170.40 is: 256,654.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,634.40 : 492,757.20 = 171,170.40 : x
  2. Step 2: Convert to fraction form
    328,634.40/492,757.20 = 171,170.40/x
  3. Step 3: Cross multiply
    328,634.40x = 492,757.20 × 171,170.40
  4. Step 4: Simplify right side
    328,634.40x = 84,345,447,026.88
  5. Step 5: Solve for x
    x = 84,345,447,026.88/328,634.40
  6. Step 6: Final answer
    x = 256,654.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.